com.feilong.lib.javassist.CtNewClass Maven / Gradle / Ivy
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/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later,
* or the Apache License Version 2.0.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package com.feilong.lib.javassist;
import java.io.DataOutputStream;
import java.io.IOException;
import com.feilong.lib.javassist.bytecode.ClassFile;
class CtNewClass extends CtClassType{
/*
* true if the class is an interface.
*/
protected boolean hasConstructor;
CtNewClass(String name, ClassPool cp, boolean isInterface, CtClass superclass){
super(name, cp);
wasChanged = true;
String superName;
if (isInterface || superclass == null){
superName = null;
}else{
superName = superclass.getName();
}
classfile = new ClassFile(isInterface, name, superName);
if (isInterface && superclass != null){
classfile.setInterfaces(new String[] { superclass.getName() });
}
setModifiers(Modifier.setPublic(getModifiers()));
hasConstructor = isInterface;
}
@Override
protected void extendToString(StringBuffer buffer){
if (hasConstructor){
buffer.append("hasConstructor ");
}
super.extendToString(buffer);
}
@Override
public void addConstructor(CtConstructor c) throws CannotCompileException{
hasConstructor = true;
super.addConstructor(c);
}
@Override
public void toBytecode(DataOutputStream out) throws CannotCompileException,IOException{
if (!hasConstructor){
try{
inheritAllConstructors();
hasConstructor = true;
}catch (NotFoundException e){
throw new CannotCompileException(e);
}
}
super.toBytecode(out);
}
/**
* Adds constructors inhrited from the super class.
*
*
* After this method is called, the class inherits all the
* constructors from the super class. The added constructor
* calls the super's constructor with the same signature.
*/
public void inheritAllConstructors() throws CannotCompileException,NotFoundException{
CtClass superclazz;
CtConstructor[] cs;
superclazz = getSuperclass();
cs = superclazz.getDeclaredConstructors();
int n = 0;
for (CtConstructor c : cs){
int mod = c.getModifiers();
if (isInheritable(mod, superclazz)){
CtConstructor cons = CtNewConstructor.make(c.getParameterTypes(), c.getExceptionTypes(), this);
cons.setModifiers(mod & (Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE));
addConstructor(cons);
++n;
}
}
if (n < 1){
throw new CannotCompileException("no inheritable constructor in " + superclazz.getName());
}
}
private boolean isInheritable(int mod,CtClass superclazz){
if (Modifier.isPrivate(mod)){
return false;
}
if (Modifier.isPackage(mod)){
String pname = getPackageName();
String pname2 = superclazz.getPackageName();
if (pname == null){
return pname2 == null;
}
return pname.equals(pname2);
}
return true;
}
}